My dd has recently turned 3 and is generally very gentle with most people, except for myself and her cousin. She's still very loving to me but does try to hit me most weeks and today repeatedly hit me even Infront of a family member who commented that the smack had come out of nowhere. I do give consequences such as short time outs or leaving places where hitting has occurred, if we're out and about but nothing seems to work long term. My dd stays with her dad overnight once a week (we're separated)but otherwise is with me every night and has never hit her dad. I feel like a failure. What else could I do that might help? My dds speech is advanced for her age, so communicating isn't so much of an issue. Is this normal behaviour?